S-LAL58 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.693495 n_e = 1.696745	V_d = 50.81 V_e = 50.53	n_F - n_C = 0.013648 n_F' - n_C' = 0.013788	Coloring: 0.32 - 0.37 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 1.06368789 C2 = 0.744939067 C3 = 1.59178942 C4 = 0.018519964 C5 = 0.00116295862 C6 = 156.636025

Refraction index
n _2.3254	-----
n _1.9701	1.665384
n _1.5296	1.671330
n _1.06	1.678011
n _t	1.678828
n _s	1.682334
n _r	1.687087
n _C	1.689393
n _C'	1.690042
n _0.6328	1.690650
n _D	1.693374
n _d	1.693495
n _e	1.696745
n _F	1.703041
n _F'	1.703830
n _g	1.710612
n _h	1.716955
n _i	1.727876
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7740
P_C,A'	0.3367
P_d,C	0.3005
P_e,C	0.5386
P_g,d	1.2541
P_g,F	0.5546
P_h,g	0.4647
P_i,g	1.2648
P_C',t	0.8216
P_e,C'	0.4911
P_F',e	0.5191
P_i,F'	1.7617

transmittance: 10 mm
τ_0.32	0.02
τ_0.33	0.22
τ_0.34	0.53
τ_0.35	0.75
τ_0.36	0.87
τ_0.37	0.935
τ_0.38	0.962
τ_0.39	0.977
τ_0.4	0.986
τ_0.42	0.991
τ_0.44	0.992
τ_0.46	0.994
τ_0.48	0.996
τ_0.5	0.997
τ_0.55	0.998
τ_0.6	0.997
τ_0.65	0.997
τ_0.7	0.998
τ_0.8	0.999
τ_0.9	0.998
τ₁	0.998
τ_1.2	0.999
τ_1.4	0.997
τ_1.6	0.996
τ_1.8	0.989
τ₂	0.977
τ_2.2	0.942
τ_2.4	0.84

Poisson coef.: 0.285
Rigidity: 361 Pa*10⁸
Young module: 928 Pa*10⁸
Knoop hardness: 580
Abrasion: 167

Climatic resistance: 3
Resistance to acids: 52.2
Phosphate resistance: 2.2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	75
100 ~ 300	86

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	C'	2
-20 ~ 0	C'	2.1
0 ~ 20	C'	2.1
20 ~ 40	C'	2.1
40 ~ 60	C'	2.1
60 ~ 80	C'	2.1
-40 ~ -20		2.1
-20 ~ 0		2.1
0 ~ 20		2.1
20 ~ 40		2.1
40 ~ 60		2.1
60 ~ 80		2.1
-40 ~ -20	D	2.2
-20 ~ 0	D	2.3
0 ~ 20	D	2.3
20 ~ 40	D	2.3
40 ~ 60	D	2.3
60 ~ 80	D	2.3
-40 ~ -20	e	2.4
-20 ~ 0	e	2.4
0 ~ 20	e	2.5
20 ~ 40	e	2.5
40 ~ 60	e	2.5
60 ~ 80	e	2.6
-40 ~ -20	F	2.9
-20 ~ 0	F	2.9
0 ~ 20	F	2.9
20 ~ 40	F	3
40 ~ 60	F	3
60 ~ 80	F	3.1
-40 ~ -20	g	3.3
-20 ~ 0	g	3.4
0 ~ 20	g	3.4
20 ~ 40	g	3.5
40 ~ 60	g	3.5
60 ~ 80	g	3.6